/*-
 * <COPYRIGHT_TAG>
 */
/**
 * Copyright (c) <2010-2014>, Wind River Systems, Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 * 1) Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2) Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
 *
 * 3) Neither the name of Wind River Systems nor the names of its contributors may be
 * used to endorse or promote products derived from this software without specific
 * prior written permission.
 *
 * 4) The screens displayed by the application must contain the copyright notice as defined
 * above and can not be removed without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _WR_CYCLES_H_
#define _WR_CYCLES_H_

#ifdef __cplusplus
extern "C" {
#endif

static __inline__ void wr_delay_us( uint32_t us ) {
	uint64_t start;
	uint64_t ticks;
	uint32_t	resolution_fs;

	resolution_fs = (uint32_t)((1000ULL*1000ULL*1000ULL*1000ULL*1000ULL) / rte_get_timer_hz());

	ticks = (uint64_t)us * 1000ULL * 1000ULL * 1000ULL;
	ticks /= resolution_fs;

	start = rte_get_timer_cycles();

	while ((rte_get_timer_cycles() - start) < ticks) {
		rte_timer_manage();
		rte_pause();
	}
}

static __inline__ void wr_delay_ms( uint32_t ms ) {
	wr_delay_us( ms * 1000);
}

static __inline__ void wr_sleep( uint32_t secs ) {
	wr_delay_us( secs * (1000 * 1000));
}

#ifdef __cplusplus
}
#endif

#endif /* _WR_CYCLES_H_ */
